摘要
利用ZRJ-1型煤自燃性测定仪测出煤在低温恒压时的吸氧量,比较不同温度下吸氧量的变化;同时比较相同温度下不同煤样吸氧量的差异,分析产生差异的原因。结果表明:煤在低温时物理吸附量随环境温度升高而下降;褐煤相对于其它三种煤样吸氧量偏大,是由于煤中水分蒸发造成比表面积增大造成的,同时,煤的结构也是一个不可忽视的因素。
Oxygen physisorption of coal samples were measured by the apparatus of ZRJ-lfor identifying the tendency of coal to spontaneous combustion at low temperature and fixed pressure. Different quantities of oxygen physisorption were compared both for different temperature environments and for different coal samples. Then the reason among the difference was analyzed. The result shows that the quantity of oxygen physisorption decreases with the environment temperature. The specific surface area increasing via the water evaporation leads to a greater quantity of the coal sample from Lila Guangxi related to the other three coal samples. Moreover, the structure of coal is also a significant factor in oxygen physisorption.
出处
《能源技术与管理》
2008年第5期88-90,共3页
Energy Technology and Management
基金
国家自然科学基金项目(50274061)
河南省基础与前沿技术研究计划项目(072300420180
082300463205)
河南省新世纪优秀人才支持计划项目(2005HANCET-05)
河南省煤矿瓦斯与火灾防治重点实验室开放基金(HKLGF200501)
河南理工大学博士基金(648183)
关键词
物理吸附
吸氧量
煤自燃
比表面积
oxygen physisorption
spontaneous combustion： coal： specific surface area
